Not really.
Nope. Slavery was always wrong, and there were anti-slavery movements at the time.
Only because the French intervened to help us to screw the British.
Nope.
He saved us from the horror of being Canadians. If the Founding Slave Rapists had lost, "British North America" still would have been a democracy and still would have gotten self rule by the 19th century, just like Canada and Australia did.
Slavery would have been abolished without firing a shot.
And we'd have socialized medicine today.
Unfortunately, we are still living in the timeline where the slave rapists won.